 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.dialogs;

 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.ui.IPerspectiveRegistry;

 public class PerspContentProvider implements IStructuredContentProvider {

     /**
      * Create a new <code>PerspContentProvider</code>.
      */
     public PerspContentProvider() {
         //no-op
 }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.viewers.IContentProvider#dispose()
      */
     public void dispose() {
         //no-op
 }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
      */
     public Object [] getElements(Object element) {
         if (element instanceof IPerspectiveRegistry) {
             return ((IPerspectiveRegistry) element).getPerspectives();
         }
         return null;
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer,
      * java.lang.Object, java.lang.Object)
      */
     public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
         //no-op
 }
 }

